Obstructive sleep apnea and testosterone affect each other in both directions. Untreated apnea lowers natural testosterone, and testosterone therapy or anabolic steroids can make apnea worse. Product labels for testosterone list sleep apnea as a caution, and big, muscular men are already at higher risk.
- Loud snoring, gasping at night and daytime sleepiness are the classic warning signs.
- A home or in-lab sleep study confirms the diagnosis.
- CPAP treatment improves sleep, energy and blood pressure.
Many lifters chase better sleep with supplements, blackout curtains and strict bedtimes, yet one of the most common reasons for poor sleep goes undiagnosed: obstructive sleep apnea. It is especially relevant if you use testosterone or anabolic steroids, carry a lot of muscle around the neck, or have gained weight on a bulk.
What sleep apnea is
In obstructive sleep apnea (OSA), the airway at the back of the throat collapses repeatedly during sleep. Breathing stops or becomes shallow for ten seconds or longer, oxygen drops, and the brain partly wakes you to reopen the airway. This can happen dozens of times an hour without you remembering it. Severity is measured by the apnea-hypopnea index (AHI), the number of events per hour.
| AHI (events per hour) | Severity |
|---|---|
| Under 5 | Normal |
| 5 to 14 | Mild |
| 15 to 29 | Moderate |
| 30 or more | Severe |
A two-way relationship
Apnea lowers testosterone
- Fragmented sleep cuts the night-time testosterone surge
- Low oxygen stresses the hormone system
- Treating apnea can improve levels in some men
Testosterone can worsen apnea
- Changes in breathing control during sleep
- More muscle and fluid around the neck
- Higher doses mean higher risk
Testosterone product monographs list untreated severe sleep apnea as a reason for caution, and clinical guidelines advise screening men for apnea before and during therapy. Anabolic steroid use, typically at doses well above replacement, adds to the risk, as does rapid weight gain during a bulk.
Warning signs
- Loud, frequent snoring
- A partner noticing pauses in breathing, choking or gasping
- Waking with a dry mouth or headache
- Daytime sleepiness, especially while driving
- Getting up often to urinate at night
- Poor concentration and irritability
- High blood pressure that is hard to control
Doctors often use the STOP-BANG questionnaire, which scores snoring, tiredness, observed pauses, blood pressure, body mass index, age, neck size and sex. A high score is a strong reason to arrange testing.
Why it matters
Untreated apnea is not just about tiredness. Repeated drops in oxygen raise blood pressure and are linked to heart rhythm problems, stroke and heart failure. It also raises hematocrit, the share of red blood cells in your blood. Testosterone and anabolic steroids raise hematocrit too, so the two together can push blood thickness into a risky range. Drowsy driving is another real danger. If you use anabolic steroids, our articles on heart health and steroids and insomnia are worth reading too.
Getting tested in Canada
- Talk to your family doctor or a walk-in clinic. Describe your symptoms honestly, including any testosterone or steroid use, since it changes the assessment.
- Get a referral. Your doctor can refer you to a sleep clinic or order a home sleep apnea test.
- Do the study. A home test records breathing and oxygen overnight in your own bed. An in-lab polysomnography study is more detailed.
- Review results. A sleep physician interprets the AHI and recommends treatment.
Coverage varies by province. In-lab studies ordered by a physician are generally covered by provincial health plans, but wait times can be long. Home tests are often faster and some private clinics offer them at low or no cost when they also supply equipment, so ask what is covered before you sign anything.
When you go, bring a list of your medications and supplements, a rough sleep diary for a week, and if possible a recording of your snoring from a phone app. If you share a bed, ask your partner what they notice. The more concrete the information, the faster the assessment. Be upfront about testosterone or anabolic steroid use: doctors need it to interpret your results, your hematocrit and your blood pressure, and the information is protected by provincial privacy law.
Treatment and what helps
- CPAP: a machine that gently pushes air through a mask to keep the airway open. It is the most effective treatment for moderate to severe apnea.
- Oral appliances: custom mouthguards that move the jaw forward, useful for mild to moderate cases.
- Weight loss: even modest fat loss can reduce severity.
- Less alcohol at night: alcohol relaxes throat muscles and worsens apnea.
- Sleeping on your side helps some people.
- Review hormone use with your doctor if apnea is diagnosed.
For many men, treating apnea does more for energy and recovery than any supplement.
- Apnea lowers testosterone, and testosterone can worsen apnea.
- Snoring plus daytime sleepiness deserves a sleep study.
- Apnea and steroids both raise hematocrit and blood pressure.
- CPAP works and often improves energy within weeks.
Frequently asked questions
Can testosterone cause sleep apnea?
Testosterone can worsen existing sleep apnea and may contribute to it in some men, especially at higher doses. Product labels advise caution in men with untreated severe apnea.
Does treating sleep apnea raise testosterone?
In some men, yes. Better sleep restores the night-time rise in testosterone, although results vary between studies.
Is a sleep study covered in Canada?
Physician-ordered in-lab studies are generally covered by provincial plans. Coverage for home tests varies, so ask your doctor or the clinic.
Top photo: Andrew E Weber, StockSnap (public domain).
This article is general information and not medical advice. If you or your partner notice signs of sleep apnea, speak with a doctor, especially if you use testosterone or anabolic steroids.
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